This is an exceptional piece of work, and very interesting to read. I'm looking forward to the next post on IQ distribution... The topic is rather hot, as it's an argument used by open racists from time to time - I'll appreciate a well-recherched scientific opinion on it.
Yeah, probably the main point to address is "The Bell Curve" by Herrnstein and Murray. While is relative to attack the unsupported assumptions the authors must make to deal with I.Q. Is a straw man of their research. When one can address the weakness of the math, instead of the determinism in the biology or the soundness of the psychology.